Water closet mounting flange



FIG. 1 is a side perspective view of a water closet mounting flange according to my design;

FIG. 2 is a view from below of my design as shown in FIG. 1;

FIG. 3 is a side view of my design the opposite side being a mirror image to that shown; and,

FIG. 4 is a plan view of my design. 

The ornamental design for a water closet mounting flange, as shown and described. 